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" The radius of a sphere is a straight line, drawn from the centre to any point of the surface ; the diameter, or axis, is a line passing through this centre, and terminated on both sides by the surface. "
Elements of Geometry and Trigonometry: With Notes - Page 176
by Adrien Marie Legendre - 1830 - 316 pages
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The Elements of Geometry

Webster Wells - Geometry - 1886 - 392 pages
...curved surface, all •points of which are equally distant from a point within called the centre. A radius of a sphere is a straight line drawn from the centre to the surface, and a diameter is a straight line drawn through the centre, having its extremities in...
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The Elements of Plane and Solid Geometry: With Numerous Exercises

Edward Albert Bowser - Geometry - 1890 - 393 pages
...sphere may be generated by the revolution of a semicircle ACB about its diameter AB as an axis. 658. A radius of a sphere is a straight line drawn from the centre to any point of the surface. A diameter of a sphere is a straight line passing through its centre, and terminating at both ends...
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Robinson's New Practical Arithmetic for Common Schools and Academies

Horatio Nelson Robinson - Arithmetic - 1892 - 430 pages
...straight line passing through the center of the sphere, and terminated at both ends by its surface. 548. The Radius of a sphere is a straight line drawn from the center to any point in the surface. EXAMPLES. 549. To find the convex surface of a regular pyramid...
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Robinson's New Practical Arithmetic for Common Schools and Academies

Horatio Nelson Robinson - Arithmetic - 1892 - 428 pages
...straight line passing through the center of the sphere, and terminated at both ends by its surface. 548. The Radius of a sphere is a straight line drawn from the center to any point in the surface. EXAMPLES. 549. To find the convex surface of a pyramid or cone....
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New Practical Arithmetic: In which the Science and Its Applications are ...

Henry B. Maglathlin - 1894 - 368 pages
...curved surface, all points of which are equally -rx distant from a point within called the center. 429. The RADIUS of a sphere is a straight line drawn from the center to any point in the surface. 430. The DIAMETER of a sphere is a straight line drawn through...
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Robinson's New Higher Arithmetic: For High Schools, Academies, and ...

Horatio Nelson Robinson - Arithmetic - 1895 - 526 pages
...straight line passing through the center of the sphere, and terminated at both ends by its surface. 920. The Radius of a sphere is a straight line drawn from the center to any point in the surface. Examples. 921. To find the surface of a sphere. 1. Find the surface...
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Plane and Solid Geometry

George Albert Wentworth - Geometry - 1899 - 500 pages
...may be generated by the revolution of a semicircle ACB about its diameter AB as an axis. 739. DBF. A radius of a sphere is a straight line drawn from the centre to the surface. A diameter of a sphere is a straight line passing through the centre and limited by the...
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Solid Geometry, Volumes 6-9

George Albert Wentworth - Geometry, Solid - 1899 - 246 pages
...may be generated by the revolution of a semicircle ACB about its diameter AB as an axis. 739. DEF. A radius of a sphere is a straight line drawn from the centre to the surface. A diameter of a sphere is a straight line passing through the centre and limited by the...
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Observational Geometry

William Taylor Campbell - Geometry - 1899 - 272 pages
...curved, and all parts of it are equally distant from a point within the sphere, which is the centre. A radius of a sphere is a straight line drawn from the centre to the surface. A diameter of a sphere is a straight line drawn through the centre and bounded at each...
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The Essentials of Geometry

Webster Wells - Geometry - 1899 - 395 pages
...bounded by a surface, all points of which are equally distant from a point within called the centre. A radius of a sphere is a straight line drawn from the centre to the surface. A diameter is a straight line drawn through the centre, having its extremities in the...
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